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 TM 55-1905-219-14-8
4-12.4. AIR CONDITIONER WATER PUMP MOTOR CONTROLLER - MAINTENANCE
INSTRUCTIONS (Continued).
DESCRIPTION OF
OPERATION
TO START THE MOTOR PRESS THE START BUTTON. THIS
ENERGIZES CONTACTOR M CONNECTING THE MOTOR ACROSS THE
LINE. M MAINTAINS ITSELF THROUGH ITS OWN AUXILIARY
CONTACT. TO STOP THE MOTOR PRESS THE STOP BUTTON.
A VOLTAGE FAILURE WILL CAUSE M TO OPEN, STOPPING THE
MOTOR. TO RESTART, WHEN VOLTAGE IS RESTORED, PRESS THE
START BUTON (LOW VOLTAGE PROTECTION).
AN OVERLOAD WILL CAUSE THE OL CONTACTS TO OPEN
CAUSING M TO OPEN STOPPING THE MOTOR. TO RESTART, PRESS
THE STOP-RESET BUTTON AND THEN THE START BUTTON.
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